S&S 124 ASM NAT EVO ENGINE IST 4-1/8"BORE, 4-5/8 STRK, 640 CAM, FORGED PISTONS, 10.8:1CR, BILLET GRCVR, G CARB IST IGNITION, 2 YR WARRANTY FROM S&S 31-9521
Source: Custom Chrome
If you re looking for the most powerful production replacement engine available for your Evolution® model, your search ends here. With its 41D 8"-bore and 45/8"-stroke pushing high-compression 10.8:1 forged pistons, the 124" SSW+ has become the most popular S&S engine since its introduction. Not just because it is big, but because it makes unbelievable power. This engine will fit in a stock H-D® frame, but the performance is anything but stock. This engine is recommend only for experienced riders who are seeking the ultimate in street performance. Other standard features on these engines include S&S Super G carburetors, S&S 640 cams, S&S High Volume High Pressure (HVHP) oil pumps, S&S electric compression releases, piston cooling oil jets, chrome-plated die-cast rocker covers, roller rocker arms, billet tappet guides and a special billet gear cover. Not recommended for kickstart applications.